# SPDX-License-Identifier: GPL-2.0
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config FB_OLPC_DCON
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tristate "One Laptop Per Child Display CONtroller support"
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depends on OLPC && FB
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depends on I2C
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depends on GPIO_CS5535 && ACPI
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select BACKLIGHT_CLASS_DEVICE
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help
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In order to support very low power operation, the XO laptop uses a
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secondary Display CONtroller, or DCON. This secondary controller
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is present in the video pipeline between the primary display
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controller (integrate into the processor or chipset) and the LCD
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panel. It allows the main processor/display controller to be
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completely powered off while still retaining an image on the display.
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This controller is only available on OLPC platforms. Unless you have
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one of these platforms, you will want to say 'N'.
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